prog17.asm

主要是8051源代码

;  PROG17 - Control Store Tables
;
;  This Application initializes the "Array" Variable of Creates a Variable Array in the Scratchpad RAM and then
;   accesses it with reading and writing.
;
;  This program will run in the UMPS simulator for a DS80C320.
;
;  Myke Predko
;  98.02.17
;
;  Hardware Notes:
;   This program is only meant to run on the Simulator

;  Variable Declarations
;  R0 is used as an Index Pointer to Array
;  R1 is used as the Source Location for the Control Store Table

Array EQU 078h			;  Define Array in Scratchpad RAM

;  Mainline
 org 0                          ;  Execution Starts Here

  mov	 R0,#Array		;  Point to Destination Variable Array
  mov    R1,#(InitTable-InitGetTable)	;  Point to Control Store Source String
InitLoop:			;  Loop Around Here until '0' is Loaded
  mov	 A,R1  
  movc   A,@A+PC		;  Get the Table Value
InitGetTable:			;  Table Offset to Display
  mov	 @R0,A			;  Save the Value
  inc	 R0			;  Point to the Next Location in the Strings
  inc	 R1
  jnz	 InitLoop		;  If the Value Saved wasn't Zero, Loop Again

;  #### - Put Code to Process the Array Here

Loop:                           ;  Loop Here Forever when Finished
  ajmp   Loop

InitTable:			;  The Control Store Table for Initializing
  db     'HEllo',0		;   "Array"